Storage battery



FIG. 1 is a perspective view of a storage battery showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a right side view thereof, the left side view thereof being a mirror image.

The broken lines shown in the figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a storage battery, as shown and described. 